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It is believed that the development of Alzheimer’s may begin up to 20 years before a diagnosis. The Alzheimer's Association has published this list of the 10 earliest symptoms of the disease:

1. Memory loss
2. Difficulty performing familiar tasks
3. Difficulty with language
4. Disorientation to time and place
5. Poor or decreased judgment
6. Problems with abstract thinking
7. Misplacing things
8. Changes in mood or behavior
9. Changes in personality
10. Lack of initiative